Re: question about ACPI & Smart Batteries

[tmc-+XVqjN4+fIJfbCVcMT5z6Ydd74u8MsAO@public.gmane.org (Tomasz Ciolek)]

Write to the maintainer of wmacpi-ng package. He has a good clue as to
how ACPI generates the battery values...

Tomasz Ciolek

On Thu, Aug 12, 2004 at 03:29:36PM -0700, Cintia B. Margi wrote:
> * Grover, Andrew (andrew.grover-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org) said:
> > Unless you have a Fujitsu Uva, you do not have a smart battery, you have
> > a control method battery.
> 
> I don't have a smart battery then.
>  
> > For a CM battery, the OS can poll the battery state by calling _BST, or
> > set a trip point (via _BTP) and the OS will get an interrupt when the
> > battery crosses that trip.
> 
> I do not want to set a trip point, but I would like to monitor the battery discharge
> process... I want to characterize the battery discharge behavior under different tasks,
> so I intend to monitor the battery voltage and the discharge rate (which I can obtain
> from /proc/acpi/battery/BAT0/state). What I would like to know is how often the state
> file is updated and how accurate these values are. Any idea where I can get this info?
> 
> Thanks,
> 
> Cintia 
> 
> --
> Cintia Margi
> Graduate Student
> SoE - UCSC
> http://www.soe.ucsc.edu/~cintia
> GPG Public Key: http://www.soe.ucsc.edu/~cintia/cintia.gpg
> B4DE 9355 3840 FF72 50F2 ACAC E2EC AA9A 41E2 CD55



-- 
Tomasz M. Ciolek	
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